﻿#region Copyright (c) 2003 - 2008, Andreas Mueller
/////////////////////////////////////////////////////////////////////////////////////////
// 
// Copyright (c) 2003 - 2008, Andreas Mueller.
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// Contributors:
//    Andreas Mueller - initial API and implementation
//
// 
// This software is derived from software bearing the following
// restrictions:
// 
// Copyright (c) 1994
// Hewlett-Packard Company
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Hewlett-Packard Company makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// Copyright (c) 1996,1997
// Silicon Graphics Computer Systems, Inc.
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Silicon Graphics makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// (C) Copyright Nicolai M. Josuttis 1999.
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// 
/////////////////////////////////////////////////////////////////////////////////////////
#endregion


using System;
using System.Linq;
using NUnit.Framework;
using NStl.Linq;
using NUnit.Framework.SyntaxHelpers;
using System.Collections;
using System.Collections.Generic;

namespace NStl.NUnit.AlgorithmFixtures.Heap
{
    [TestFixture]
    public class PopHeapFixture : AlgorithmBaseFixture
    {
        [Test]
        public override void SuccessfullPass()
        {
            List<int> heap = new List<int> {0, 1, 2, 3, 4};
            Algorithm.RandomShuffle(heap.Begin(), heap.End());
            Algorithm.MakeHeap(heap.Begin(), heap.End());

            Assert.That(heap.First(), Is.EqualTo(4));

            Algorithm.PopHeap(heap.Begin(), heap.End());

            Assert.That(heap.First(), Is.EqualTo(3));
            Assert.That(heap.Last(), Is.EqualTo(4));
        }

        public override void NonSuccessfullPass()
        {
            throw new NotImplementedException("The method or operation is not implemented.");
        }

        [Test]
        public override void StartIteratorIsEqualToEndIterator()
        {
            List<int> heap = new List<int> {0, 1, 2, 3, 4};
            Algorithm.RandomShuffle(heap.Begin(), heap.End());
            Algorithm.MakeHeap(heap.Begin(), heap.End());

            ICollection refCollection = heap.ToArray();

            Assert.That(heap.First(), Is.EqualTo(4));

            Algorithm.PopHeap(heap.Begin(), heap.Begin());

            Assert.That(heap, Is.EqualTo(refCollection));
        }
    }
}
